Biagi Shirley. (2012). Media/Impact an Introduction to Mass Media (10th.). Cengage Learning.
Lua i Stíl Chicago (17ú heag.)Biagi Shirley. Media/Impact an Introduction to Mass Media. 10th. Uk: Cengage Learning, 2012.
Lua MLA (9ú heag.)Biagi Shirley. Media/Impact an Introduction to Mass Media. 10th. Cengage Learning, 2012.
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